Klopeiner See
The warmest bathing lake in Austria, small, shallow and sheltered, reaching twenty-eight degrees in summer.
Updated 21 October 2026
The Klopeiner See is small - about a square kilometre - shallow, and sits in a sheltered hollow in south-east Carinthia with no significant inflow or outflow, and the combination means it heats up faster and further than any other bathing lake in the country, regularly reaching twenty-seven or twenty-eight degrees in high summer, which is the single fact the whole local economy rests on. The shore is consequently dense with hotels, apartments, lidos and a promenade, and in July and August it is busy in a way that has little to do with wilderness. Motorboats are banned. Around it are the Sablatnigmoor wetland reserve with a bird tower, the smaller Turnersee, and the Romanesque church at Sankt Kanzian; the Carinthian Slovene minority is present in the villages around.
Highlights
- The warmest lake in Austria - reaching twenty-seven or twenty-eight degrees.
- A dense resort shore - hotels, lidos and promenade around a small lake.
- Motorboat-free water - swimming, pedalos and electric boats only.
- The Sablatnigmoor - the wetland reserve and bird tower nearby.
When to go
June to September. A day.
Things to know
It is small and heavily built up - this is a resort lake, not a quiet one. July and August are crowded and accommodation is expensive. Most shore access is through paid lidos.
Nearby
The Turnersee and Sablatnigmoor are close; Klagenfurt is north-west.
Key facts
Source: Wikidata, item Q687150, read on 18 October 2026.
What to pack for Klopeiner See
Chosen from what this place is for. Tap a kit for the full checklist.
- Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
- Quick-dry towel - A microfibre towel packs small and dries in minutes. Find on Amazon
- Water shoes - Protect your feet on rocky entries, hot sand and sea-urchin spines. Find on Amazon
- Dry bag - Keeps phone, cash and keys safe while you are in the water. Find on Amazon
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.



